Since then, Road & Track has come out with a report that says the opposite, suggesting that the U.S. will be offered a four-cylinder engine on the 2015 Mustang and perhaps not as the base option.

The latest report, once again citing an anonymous source, says the 2015 Mustang will likely retain the current model’s 305-horsepower 3.7-liter V-6 as its base option.

The four-cylinder engine, which will be an enlarged version of the 252-horsepower 2.0-liter EcoBoost engine fitted to the Ford Focus ST, will likely develop well in excess of 300 horsepower, which is why Ford Motor Company [NYSE:F] is suggested to be considering adding it as a mid-level option on the 2015 Mustang.

The successor to the current Mustang GT is said to stick with a V-8 for its motivation.

While this scenario seems unlikely, the return of four-cylinder power on the Mustang will certainly be interesting. For the SVO fans out there, let’s hope the engine is in fact offered in the U.S.

Stay tuned for an update but in the meantime check out our previous spy shots report for more details on the 2015 Ford Mustang.